Powertrain mount with high frequency plunger

Abstract

A mount for a powertrain component of a motor vehicle comprises first and second mounting members, an elastomeric body connected to the first mounting member and connected to the second mounting member, and a plate. The plate defines first and second chambers, and has an orifice for the passage of fluid therethrough. A plunger having at least one hole is connected to the first mounting member, and a compliance member is disposed proximate the at least one hole.

What is claimed is:  
     
       1. A mount for a powertrain component of a motor vehicle, the mount comprising: 
       first and second mounting members;  
       an elastomeric body connected to the first mounting member and connected to the second mounting member;  
       a plate defining first and second chambers, the plate having an orifice for the passage of fluid therethrough;  
       a plunger connected to the first mounting member, the plunger having at least one hole; and  
       a compliance member disposed proximate the at least one hole.  
     
     
       2. The mount of  claim 1  wherein the compliance member comprises an elastomer. 
     
     
       3. The mount of  claim 1  wherein the compliance member comprises rubber. 
     
     
       4. The mount of  claim 1  wherein the powertrain component comprises an engine. 
     
     
       5. The mount of  claim 1  wherein the powertrain component comprises a transmission. 
     
     
       6. An engine mount for a motor vehicle, the mount comprising: 
       first and second mounting members;  
       an elastomeric body connected to the first mounting member and connected to the second mounting member;  
       a plate defining first and second chambers, the plate having an orifice for the passage of fluid therethrough;  
       a plunger connected to the first mounting member, the plunger having at least one hole; and  
       a compliance member disposed in the at least one hole.  
     
     
       7. The engine mount of  claim 6  wherein the compliance member comprises an elastomer. 
     
     
       8. The engine mount of  claim 6  wherein the compliance member comprises rubber.